pci.c
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/*
* (C) Copyright 2002 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* PCI initialisation for the MPC10x.
*/
#include <common.h>
#include <pci.h>
#include <mpc106.h>
#ifdef CONFIG_PCI
struct pci_controller local_hose;
void pci_init_board(void)
{
struct pci_controller* hose = (struct pci_controller *)&local_hose;
u16 reg16;
hose->first_busno = 0;
hose->last_busno = 0xff;
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCI_MEMORY_BUS,
CONFIG_SYS_PCI_MEMORY_PHYS,
CONFIG_SYS_PCI_MEMORY_SIZE,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
/* PCI memory space */
pci_set_region(hose->regions + 1,
CONFIG_SYS_PCI_MEM_BUS,
CONFIG_SYS_PCI_MEM_PHYS,
CONFIG_SYS_PCI_MEM_SIZE,
PCI_REGION_MEM);
/* ISA/PCI memory space */
pci_set_region(hose->regions + 2,
CONFIG_SYS_ISA_MEM_BUS,
CONFIG_SYS_ISA_MEM_PHYS,
CONFIG_SYS_ISA_MEM_SIZE,
PCI_REGION_MEM);
/* PCI I/O space */
pci_set_region(hose->regions + 3,
CONFIG_SYS_PCI_IO_BUS,
CONFIG_SYS_PCI_IO_PHYS,
CONFIG_SYS_PCI_IO_SIZE,
PCI_REGION_IO);
/* ISA/PCI I/O space */
pci_set_region(hose->regions + 4,
CONFIG_SYS_ISA_IO_BUS,
CONFIG_SYS_ISA_IO_PHYS,
CONFIG_SYS_ISA_IO_SIZE,
PCI_REGION_IO);
hose->region_count = 5;
pci_setup_indirect(hose,
MPC106_REG_ADDR,
MPC106_REG_DATA);
pci_register_hose(hose);
hose->last_busno = pci_hose_scan(hose);
/* Initialises the MPC10x PCI Configuration regs. */
pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, ®16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16);
/* Clear non-reserved bits in status register */
pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
}
#endif /* CONFIG_PCI */